Under Siege — Stephen Coonts

In an explosion of terror, America's worst nightmares come true when Colombian suicide squads hit the streets of Washington. They have gone to war, and will destroy everything and everybody in their path.

With its power and communications system blown apart, the city is plunged into turmoil. In the Pentagon, Captain Jake Grafton and the joint Chiefs of Staff face the most deadly challenge ever to threaten America.

But while confusion and chaos rule the streets, a ruthless hunter, serving an unknown master, has his own catastrophic mission.He will not rest until he has wiped out the whole cabinet, stating with the President himself...